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Solar flares in August 1998
C-class122
M-class14
X-class5
LargestX4.91998-08-18
Sunspot number118.6NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| August 1997 | 21 | 1 | 0 | M1.4 |
| August 1998 | 122 | 14 | 5 | X4.9 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1998-08-18 | 22:10 | 22:19 | 18 | X4.9 | N33E87 | 8307 |
| 1998-08-19 | 21:35 | 21:45 | 15 | X3.9 | N32E75 | – |
| 1998-08-18 | 08:14 | 08:24 | 18 | X2.8 | N33E68 | 8307 |
| 1998-08-17 | 21:10 | 21:20 | 20 | X1.2 | – | – |
| 1998-08-24 | 21:50 | 22:12 | 45 | X1.0 | N35E09 | 8307 |
| 1998-08-21 | 23:57 | 00:09 | 19 | M9.0 | N42E51 | – |
| 1998-08-09 | 17:09 | 17:18 | 14 | M3.3 | N15E55 | 8299 |
| 1998-08-14 | 08:19 | 08:28 | 13 | M3.1 | S23W74 | 8293 |
| 1998-08-16 | 17:37 | 18:21 | 82 | M3.1 | – | – |
| 1998-08-08 | 03:12 | 03:17 | 8 | M3.0 | – | – |
| 1998-08-19 | 14:04 | 14:26 | 40 | M3.0 | N35E80 | 8307 |
| 1998-08-19 | 12:22 | 12:42 | 29 | M2.3 | N35E78 | 8307 |
| 1998-08-23 | 09:23 | 09:34 | 24 | M2.2 | N32E33 | 8307 |
| 1998-08-18 | 04:00 | 04:16 | 27 | M1.5 | – | 8299 |
| 1998-08-31 | 15:29 | 15:39 | 18 | M1.5 | N32W69 | 8307 |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
About this page
141 flares of class C or larger in August 1998; by M/X count it ranks 165 of 565 months.